Solve the equation.x + 3 = 7
A. -10
B. -4
C. 10
D. 4
Answer: D
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Suppose that the functions f and g and their derivatives with respect to x have the following values at the given values of x. Find the derivative with respect to x of the given combination at the given value of x.
1/f2(x), x = 4
A. - 
B. - 
C. 
D. 
Evaluate the expression for the given replacement values. Write the answer in simplest form.
for y = 
, x = 
A. 
B. 
C. 12
D. 
Joe and Bryan have been comparing their investment portfolios for several years. Joe claims that his portfolio of only stocks has a better record than Bryan's portfolio that is 20% stocks and 80% bonds. Let x be a random variable representing the annual percent return for Joe's portfolio and let y be a random variable representing the annual return on Bryan's portfolio. Use this information to calculate the coefficient of variation for Bryan's portfolio. Round your answer to two decimal places.
a. 75.8%
b. 131.92%
c. 65.31%
d. 125.15%
e. 153.11%
Solve the problem.The manufacturer's cost, C, in dollars, can be found using the formula 
where n is the number of parts produced. Find the cost when 216 parts are produced.
A. $17 B. $3170 C. $2000 D. $2300